Open Access
Table 2
Comparison of TiAl alloys to superalloys [6].
| Property | TiAl-base alloys | Superalloys |
|---|---|---|
| Density (gm/cm3) | 3.7–3.9 | 8.3 |
| Youngs modulus (GPa) | 160–176 | 206 |
| Yield strength (MPa) | 400–630 | 1000 |
| Tensile strength (MPa) | 450–700 | 1200 |
| Ductility (%) | 1–3 | 15 |
| Creep limit (°C) | 1000 | 1090 |
| Oxidation (°C) | 900–1000 | 1090 |
| Cost ($/lb) | 1300 | 20 |
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